For those going into this manga there is a sequel to this with the same name the story doesn't end here. The sequel does start off with another character and story but the two story should meet up later in the story. I reccemend following the two story side by side as you don't lose much as of...
I know this isn't supposed to end in incest. But I really don't want either of them end up with anyone. I will take a ending where they just agree not to date anyone and remind together and have a nonsexual relationship.